City: Take Off Top Floor of Townhouse

A Manhattan townhouse owner is being forced to do something few, if any, New York homeowners have ever done before: tear down a top-floor addition to a building to comply with city landmark regulations.

The Landmark Preservation Commission decided in March that a sixth-floor addition to the building at 12-13 West 68th St. was in violation of landmark rules. The building's owner has begun taking steps to remove the entire floor,...